Improvement in the manufacture of hoes



the blade.

NITED STATES J UDSON KNIGHT, OF NEWARK, NEW

ATENT OFFICE.

JERsEY, AssIeN-oapro s. BOYD, SAID BOYD ASSIGNOB TO It. W. BOOTH.

IMPROVEMENT IN THE MANUFACTURE OF HOES.

To all whom it may concern:

Be it known that I, JUDSON KNIGHT, of Newark, in the county of Essex andState ot' New Jersey, have invented a new and useful Improvement in theManufacture of Hoes with Steel Blades and Malleable Gast-Iron Eyes; andI do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, forming part of this specication.

This invention is an improvement on the hoe for which Letters Patentwere granted to Samuel Boyd, January 13, 1857.

It consists in welding a plate of wroughtiron between the malleablecast-iron eye and the steel blade for the purpose of insuring a moreperfect union of the eye and the blade.

Wrought-iron unites with steel and with malleable east-iron more readilythan steel and malleable cast-iron unite with each other,

and hence the interposed Wrought-iron platel serves as a medium foreffecting a more per feet and secure union between the eye and the bladethan can be effected when the malleable cast-iron and steel are inimmediate contact.

To enable others to use my invention, I will proceed to describe themanner in which it is to be performed, with reference to the drawings,in which- Figure l is a perspective view of a complete hoe constructedby my invention. Fig. 2 is a perspective view of the steel blade as itappears before the eye is applied to it. Fig. 3 is a perspective view ofthe malleable castiron eye as it appears before being united to Fig. 4is a perspective view of the wrought-iron plate that is to be interposedbetween the steel blade and malleable castiron eye. Fig. 5 is a planview representing the blade, the eye, and the wrought-iron plate asplaced together ready for welding. Fig. 6 is a back view of the same.Fig. 7 is a central section of the same, taken transversely to the edgeof the blade.

Similar letters of reference indicate corresponding parts in the severaligures.

The blade A is cut'to the required shape from a piece of cast-steelplate.

The eye B is cast with a flange, a, that is flat on the back side, whichis to be attached to the front face of the blade.

The wrought-iron plate C, that is interposed between the eye and theblade, consists of a piece of sheet-iron of a thickness about onethirty-second of an inch, cut to a form to lit between the eye and itsflange and the part of the blade to which they are to be united, with amargin, b, at its sides to be turned over on its front face.

The margin b represented in the drawings turns over far enough to lapover the edges of the flange of the eye, as shown in Fig. 5, where thesaid edges are indicated by dotted lines, and also in Figs. 6 and 7; butit is not necessary that the said margin should lap over the flange. Allthat is required is that its edges should it up to the edges of theflange, so as to ll the corner or angular space formed between thelatter edges and the face of the blade.

To unite the three pieces A, B, and O by welding, they are placedtogether, as shown in Figs. 5, 6, and 7, and heated to a properwelding-heat, and then placed, with the blade at the bottom, on an anvilunder a drop containing a die of suitable form to fit the eye and itsflange, and by the descent of the drop the three are united. Thegrinding up and bending ofthe blade are afterward performed in the usualmanner.

I am aware that a wrought-iron plate has been applied in the form of acap to assist in the union of the steel blade and malleable castiron eyeof a hoe by the welding process, and therefore I do not claim the use ofa wroughtiron uniting plate when not interposed between the steel bladeand malleable cast-iron eye; and I do not claim the lapping of themargin of the wrought-iron plate over the edges of the flange of theeye; but

What I claim as my invention, and desire to secure by Letters Patent,is-

The welding of the wrought-iron plate between the steel blade and themalleable castiron eye, substantially as and for the purpose set forth,or, in other words,'`I:claim"the hoe constructed ot' the three pieces A,B, and C, arranged relatively to each other and welded togethersubstantially as herein specied.

J UDSON KNIGHT.

Witnesses:

SELIM Fans. GQHEN, l J AMEs F. BUCKLEY.

